CN104880868B - A kind of liquid crystal grating and preparation method thereof and display device - Google Patents
A kind of liquid crystal grating and preparation method thereof and display device Download PDFInfo
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- CN104880868B CN104880868B CN201510334167.6A CN201510334167A CN104880868B CN 104880868 B CN104880868 B CN 104880868B CN 201510334167 A CN201510334167 A CN 201510334167A CN 104880868 B CN104880868 B CN 104880868B
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
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- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/30—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers
- G02B30/31—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers involving active parallax barriers
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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Abstract
The invention discloses a kind of liquid crystal grating and preparation method thereof and display device, belong to field of display devices.The liquid crystal grating includes：The first transparency electrode with optical grating construction, the polymer network layer being covered in the first transparency electrode and the second substrate being covered on the polymer network layer on the first substrate of the light emission side of display panel are formed, the one side of the second substrate towards the polymer network layer has the second transparency electrode being correspondingly arranged with the first transparency electrode；The polymer network layer includes liquid crystal, makes macromolecule network that the liquid crystal arranges by preset direction by grappling effect and for snarling the macromolecule network and the macromolecule network being bonded at into the copolymer in the first transparency electrode.
Description
Technical field
The present invention relates to field of display devices, more particularly to a kind of liquid crystal grating and preparation method thereof and display device.
Background technology
Bore hole 3D technology refers to, not by any instrument, directly allow two eyes in left and right to see that two width have from display screen
There is the picture of parallax, two width pictures are launched into brain, produce the Display Technique with third dimension picture.In bore hole 3D technology
In, with the bore hole 3D lcd technologies that liquid crystal display is combined be by bore hole 3D current research focus.
Bore hole 3D liquid crystal displays can be divided into barrier fence type and lens type bore hole 3D liquid crystal displays, barrier fence type bore hole 3D
Liquid crystal display with the process compatible of the panel display screen such as LCDs or organic electroluminescent screen due to can obtain extensively
Research.Barrier fence type bore hole 3D liquid crystal displays are usually to be superimposed a liquid crystal grating in the light extraction side surface of display panel, no
Can only realize bore hole 3D can also realize 3D display and 2D show between patten transformation.
Liquid crystal grating be usually be made up of upper substrate, infrabasal plate and the liquid crystal layer between two substrates, upper substrate and
There is strip shaped electric poles and face electrode respectively, and strip shaped electric poles and face electrode are separately positioned on upper substrate and infrabasal plate court on infrabasal plate
To the one side of the liquid crystal layer, electric field caused by strip shaped electric poles and face electrode can change the direction of liquid crystal in liquid crystal layer, from
And liquid crystal grating is set to be changed between 3D display and 2D are shown.
Due to needing to be superimposed a liquid crystal grating on a display panel, cause the thickness of whole display part to become big, show in 2D
Transmitance loss is higher when showing, influences display effect.
The content of the invention
The embodiments of the invention provide a kind of liquid crystal grating and preparation method thereof and display device, can avoid in display surface
One layer of liquid crystal grating is superimposed on plate causes the thickness of whole display part to become the problem of big, enhances display effect.The technology
Scheme is as follows：
In a first aspect, the embodiments of the invention provide a kind of liquid crystal grating, the liquid crystal grating includes：
Form the first transparency electrode with optical grating construction on the first substrate of the light emission side of display panel, be covered in
Polymer network layer in the first transparency electrode and the second substrate being covered on the polymer network layer, described
The one side of two substrates towards the polymer network layer has the second transparency electrode being correspondingly arranged with the first transparency electrode；
The polymer network layer includes liquid crystal, the macromolecule for making the liquid crystal be arranged by preset direction by grappling effect
Network and for snarling the macromolecule network and the macromolecule network being bonded at into the copolymerization in the first transparency electrode
Thing.
In a kind of implementation of the embodiment of the present invention, the macromolecule network is that reactive monomer leads to light trigger
Cross the macromolecule network of polymerization formation.
In another implementation of the embodiment of the present invention, the reactive monomer is epoxy monomer, the light
Initiator is cation light initiator.
In another implementation of the embodiment of the present invention, the epoxy monomer be glycol glycidyl ethers,
One or more in bisphenol F diglycidyl ether, trihydroxymethylpropanyltri diglycidyl ether and pentaerythrite glycidol ether
Mixture.
In another implementation of the embodiment of the present invention, the copolymer is vinyl-vinyl acetate copolymer.
In another implementation of the embodiment of the present invention, when the liquid crystal is positivity liquid crystal, the high score subnet
Network makes the positivity liquid crystal disorderly arranged by grappling effect；
When the liquid crystal is negative liquid crystal, the macromolecule network makes the negative liquid crystal vertical row by grappling effect
Row.
In another implementation of the embodiment of the present invention, the thickness of the polymer network layer is 2-20 microns.
Second aspect, the embodiment of the present invention additionally provide a kind of liquid crystal grating preparation method, and methods described includes：
The first transparency electrode with optical grating construction is made on the first substrate of the light emission side of display panel；
One layer of polymer network layer is covered in the first transparency electrode, the polymer network layer includes liquid crystal, led to
Crossing grappling effect makes macromolecule network that the liquid crystal arrange by preset direction and for snarling the macromolecule network and general
The macromolecule network is bonded at the copolymer in the first transparency electrode；
Second substrate is covered on the polymer network layer to form liquid crystal grating, the second substrate is towards the height
The one side of molecular network network layers has the second transparency electrode being correspondingly arranged with the first transparency electrode.
It is described that a floor height molecule is covered in the first transparency electrode in a kind of implementation of the embodiment of the present invention
Internet, including：
In the first transparency electrode coat one layer of first mixture, first mixture include reactive monomer,
Light trigger, positivity liquid crystal and copolymer；
More than first substrate to the clearing point temperature of the positivity liquid crystal of the heating coated with first mixture, make institute
It is disorderly arranged to state positivity liquid crystal；
Using the first mixture described in ultraviolet light, make reactive monomer that ionic polymerization shape occur with light trigger
Into macromolecule network, with the arrangement of positivity liquid crystal described in grappling, the polymer network layer is obtained.
It is described using the first mixture described in ultraviolet light, bag in another implementation of the embodiment of the present invention
Include：
The use of intensity of illumination is 3-25mW/cm2Ultraviolet light described in the first mixture 20-40min.
In another implementation of the embodiment of the present invention, methods described also includes：
Reactive monomer, light trigger and positivity liquid crystal are well mixed and obtain the second mixture, reactive monomer, light draw
The quality of hair agent and positivity liquid crystal accounts for 20-60%, 3-5% and 35-77% of second mixture quality respectively；
Second mixture is well mixed with copolymer 3/7-2/8 in mass ratio, obtains first mixture.
It is described that a floor height point is covered in the first transparency electrode in another implementation of the embodiment of the present invention
Subnet network layers, including：
One layer of vertical-tropism agent is coated in the first transparency electrode；
One layer of the 3rd mixture, the 3rd mixing are coated in the first transparency electrode coated with vertical-tropism agent
Thing includes reactive monomer, light trigger, negative liquid crystal and copolymer；
Using the 3rd mixture described in ultraviolet light, make reactive monomer that ionic polymerization shape occur with light trigger
Into macromolecule network, with the arrangement of negative liquid crystal described in grappling, the polymer network layer is obtained.
It is described using the 3rd mixture described in ultraviolet light, bag in another implementation of the embodiment of the present invention
Include：
The use of intensity of illumination is 3-25mW/cm2Ultraviolet light described in the 3rd mixture 20-40min.
In another implementation of the embodiment of the present invention, methods described also includes：
Reactive monomer, light trigger and negative liquid crystal are well mixed and obtain the 4th mixture, reactive monomer, light draw
The quality of hair agent and negative liquid crystal accounts for 20-60%, 3-5% and 35-77% of the 4th mixture quality respectively；
4th mixture is well mixed with copolymer 3/7-2/8 in mass ratio, obtains the 3rd mixture.
In another implementation of the embodiment of the present invention, the reactive monomer is epoxy monomer, the light
Initiator is cation light initiator.
In another implementation of the embodiment of the present invention, the epoxy monomer be glycol glycidyl ethers,
One or more in bisphenol F diglycidyl ether, trihydroxymethylpropanyltri diglycidyl ether and pentaerythrite glycidol ether
Mixture.
In another implementation of the embodiment of the present invention, the copolymer is vinyl-vinyl acetate copolymer.
In another implementation of the embodiment of the present invention, the thickness of the polymer network layer is 2-20 microns.
The third aspect, the embodiment of the present invention additionally provide a kind of display device, and the display device includes：Display panel,
Liquid crystal grating, the first polaroid and the second polaroid being arranged on the display panel, the display panel and the liquid crystal
Grating is folded between first polaroid and the second polaroid, and the liquid crystal grating is above-mentioned liquid crystal grating.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：
By covering a polymer network layer on the first substrate of the light emission side of display panel, in the polymer network layer
In, macromolecule network makes the liquid crystal be arranged by preset direction by grappling effect, to ensure that when being powered liquid crystal can be changed
The sequence of liquid crystal in grating, realize 3D display and 2D show between conversion, and on the one hand copolymer is used to wind above-mentioned height
Molecular network, on the first substrate of on the other hand light emission side that macromolecule network is adhered directly to display panel, without list
The making that one piece of substrate carries out liquid crystal grating is solely provided, so saving one piece of substrate compared with prior art, thus reduced
The thickness of liquid crystal grating, the problem of transmitance loss is higher when 2D is shown is avoided, enhances display effect.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of structural representation of liquid crystal grating provided in an embodiment of the present invention；
Fig. 2 is a kind of structural representation of polymer network layer provided in an embodiment of the present invention；
Fig. 3 is structural representation when a kind of polymer network layer provided in an embodiment of the present invention is not powered on；
Structural representation when Fig. 4 is a kind of polymer network layer power-up provided in an embodiment of the present invention；
Fig. 5 is structural representation when another polymer network layer provided in an embodiment of the present invention is not powered on；
Structural representation when Fig. 6 is another polymer network layer power-up provided in an embodiment of the present invention；
Fig. 7 is a kind of flow chart of liquid crystal grating preparation method provided in an embodiment of the present invention；
Fig. 7 a are that the structure after first transparency electrode is made in liquid crystal grating manufacturing process provided in an embodiment of the present invention is shown
It is intended to；
Fig. 7 b are that the structure after polymer network layer is made in liquid crystal grating manufacturing process provided in an embodiment of the present invention is shown
It is intended to；
Fig. 7 c are the structural representations after liquid crystal grating provided in an embodiment of the present invention completes；
Fig. 8 is a kind of flow chart of liquid crystal grating preparation method provided in an embodiment of the present invention；
Fig. 8 a are coated in first in first transparency electrode in liquid crystal grating manufacturing process provided in an embodiment of the present invention
The structural representation of mixture；
Fig. 8 b are the structural representation of the first mixture provided in an embodiment of the present invention after the heating；
Fig. 9 is the flow chart of another liquid crystal grating preparation method provided in an embodiment of the present invention；
Fig. 9 a are coated in the 3rd in first transparency electrode in liquid crystal grating manufacturing process provided in an embodiment of the present invention
The structural representation of mixture；
Figure 10 is a kind of structural representation of display device provided in an embodiment of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 provides a kind of structural representation of liquid crystal grating, and referring to Fig. 1, the liquid crystal grating includes：
Form the first transparency electrode with optical grating construction on the first substrate 100a of the light emission side of display panel 100
101st, the polymer network layer 102 being covered in first transparency electrode 101 and be covered on polymer network layer 102 second
Substrate 104, the one side of second substrate 104 towards polymer network layer 102 have the be correspondingly arranged with first transparency electrode 101
Two transparency electrodes 103.
Wherein, the first transparency electrode 101 with optical grating construction is the transparency electrode that will be covered on first substrate 100a
Layer etches away part formation, can be specifically strip shaped electric poles or block type electrode.Correspondingly, above-mentioned second transparency electrode 103
Can be strip shaped electric poles or block type electrode.
Fig. 2 provides a kind of structural representation of polymer network layer, as shown in Fig. 2 polymer network layer 102 includes liquid
Brilliant 102a, make by grappling effect macromolecule network 102b that liquid crystal 102a arranges by preset direction and for snarling high score
Macromolecule network is simultaneously bonded at the copolymer 1 02c in first transparency electrode 101 by sub-network 102b.
The embodiment of the present invention on the first substrate of the light emission side of display panel by covering a polymer network layer, at this
In polymer network layer, macromolecule network makes liquid crystal be arranged by preset direction by grappling effect, so that ensure can be with when being powered
Change the sequence of liquid crystal in liquid crystal grating, realize 3D display and 2D show between conversion, and copolymer is on the one hand for twining
Around above-mentioned macromolecule network, on the first substrate of on the other hand light emission side that macromolecule network is adhered directly to display panel, and
One piece of substrate need not be provided separately and carry out the making of liquid crystal grating, so one piece of substrate is saved compared with prior art, because
And the thickness of liquid crystal grating is reduced, the problem of transmitance loss is higher when 2D is shown is avoided, enhances display effect.
Specifically, macromolecule network 102b can be the high score that reactive monomer is formed with light trigger by polymerization
Sub-network.
More specifically, reactive monomer can be epoxy monomer, light trigger can be cation light initiator.Adopt
Polymerisation generation macromolecule network is carried out with epoxy monomer and cation light initiator, saves and is reacted in general polymerization
When required chiral additives.
Wherein, epoxy monomer can be glycol glycidyl ethers (EGDE), bisphenol F diglycidyl ether
(DGEBF), trihydroxymethylpropanyltri diglycidyl ether (TMPTGE) and one kind in pentaerythrite glycidol ether (PTTGE) or
Several mixtures.
Specifically, EGDE structural formula is：
Wherein n average value is between 3-10.
DGEBF structural formula is：
Its
Middle n average value is between 0-3.
TMPTGE structural formula is：
PTTGE structural formula is：
Wherein, cation light initiator can be UVI-6974 type cation light initiators, and structural formula is as follows：
Specifically, copolymer can be vinyl-vinyl acetate copolymer, and structural formula is as follows：
Vinyl-vinyl acetate copolymer viscosity is larger, can be very good polymer network layer being bonded at the first transparent electricity
On extremely；Vinyl-vinyl acetate copolymer molecular weight is higher and is in netted, can enwind macromolecule network.
In embodiments of the present invention, the liquid crystal in polymer network layer both can be positivity liquid crystal or negativity liquid
It is brilliant.
In addition, the ratio of each composition can be set according to being actually needed in polymer network layer, specific each composition
Ratio can be described in detail in follow-up preparation method, not repeat here.
The embodiments of the invention provide a kind of liquid crystal grating, the knot of its structural representation and Fig. 1 liquid crystal gratings provided
Structure schematic diagram is identical, but liquid crystal is positivity liquid crystal in the polymer network layer of the liquid crystal grating, as shown in figure 3, macromolecule network
Layer 102 includes positivity liquid crystal 102d, macromolecule network 102b and copolymer 1 02c, and macromolecule network 102b is acted on by grappling
Make positivity liquid crystal 102d disorderly arranged.For positivity liquid crystal, when the non-on-load voltage of liquid crystal grating, positivity liquid crystal 102d is in
Existing disorderly arranged, referring again to Fig. 3, now liquid crystal grating is opaque state (transmitance close to 0%), provided with the liquid crystal grating
Display device is 3D display；When liquid crystal grating on-load voltage, positivity liquid crystal 102d arranges along direction of an electric field, referring to Fig. 4, this
When liquid crystal grating be transparent state (transmitance close to 100%), the display device provided with the liquid crystal grating is that 2D is shown.
The embodiment of the present invention additionally provides another liquid crystal grating, the liquid crystal grating that its structural representation is provided with Fig. 1
Structural representation it is identical, but liquid crystal is negative liquid crystal in the polymer network layer of the liquid crystal grating, as shown in figure 5, macromolecule
Internet 102 includes negative liquid crystal 102e, macromolecule network 102b and copolymer 1 02c, and macromolecule network 102b passes through grappling
Effect is arranged vertically negative liquid crystal 102e.
And for negative liquid crystal, when the non-on-load voltage of liquid crystal grating, negative liquid crystal 102e is arranged vertically in order, then
Secondary now liquid crystal grating is transparent state referring to Fig. 5, and the display device provided with the liquid crystal grating is that 2D is shown；When liquid crystal grating plus
When carrying voltage, negative liquid crystal 102e arranges along perpendicular to direction of an electric field, and referring to Fig. 6, now liquid crystal grating is opaque state, if
The display device for having the liquid crystal grating is 3D display.
In the liquid crystal grating provided above, the thickness of polymer network layer can be 2-20 microns.The height of 2-20 microns
Molecular network network layers had both ensured the performance of liquid crystal grating, ensured that the thickness of liquid crystal grating is unlikely excessive again.
Fig. 7 provides a kind of flow chart of liquid crystal grating preparation method, and this method can be used for making previously described liquid crystal
Grating, referring to Fig. 7, this method includes：
Step 201：The first transparency electrode with optical grating construction is made on the first substrate of the light emission side of display panel.
As shown in Figure 7a, 20 on the first substrate of the light emission side of display panel on make have first transparency electrode 21.
Wherein, the first transparency electrode with optical grating construction can be made by following manner：
Layer of transparent electrode layer is covered on the first substrate；
A part for transparent electrode layer is etched away, the first transparency electrode with optical grating construction is formed, can be specifically bar
Shape electrode or block type electrode.
Step 202：One layer of polymer network layer is covered in first transparency electrode, polymer network layer includes liquid crystal, led to
Crossing grappling effect makes macromolecule network that liquid crystal arranges by preset direction and for snarling macromolecule network and by high score subnet
Network is bonded at the copolymer in first transparency electrode.As shown in Figure 7b, covered with polymer network layer 22 in first transparency electrode 21.
Step 203：Second substrate is covered on polymer network layer to form liquid crystal grating, second substrate is towards macromolecule
The one side of Internet has the second transparency electrode being correspondingly arranged with first transparency electrode.As shown in Figure 7 c, in macromolecule network
Layer 22 on cover second substrate 24, second substrate 24 towards polymer network layer 22 one side have with first transparency electrode 21 it is right
The second transparency electrode 23 that should be set.
Specifically, second transparency electrode 23 possessed by second substrate 24 can be carried out by advance on second substrate 24
Transparency electrode makes to obtain.Second transparency electrode can be strip shaped electric poles or block type electrode.
The embodiment of the present invention on the first substrate of the light emission side of display panel by covering a polymer network layer, at this
In polymer network layer, macromolecule network makes the liquid crystal be arranged by preset direction by grappling effect, to ensure when being powered
The sequence of liquid crystal in liquid crystal grating can be changed, realize 3D display and 2D show between conversion, and on the one hand copolymer is used
In winding above-mentioned macromolecule network, on the other hand macromolecule network is adhered directly to the first substrate of the light emission side of display panel
On, the making of liquid crystal grating is carried out without one piece of substrate is provided separately, so saving one piece of base compared with prior art
Plate, thus the thickness of liquid crystal grating is reduced, the problem of transmitance loss is higher when 2D is shown is avoided, enhances display effect
Fruit.
Fig. 8 provides a kind of flow chart of liquid crystal grating preparation method, and this method uses positivity liquid crystal as raw material, and
Specifically illustrate and how one layer of polymer network layer is covered in first transparency electrode, referring to Fig. 8, this method includes：
Step 301：The first transparency electrode with optical grating construction is made on the first substrate of the light emission side of display panel.
Wherein, the first transparency electrode with optical grating construction can be made by following manner：
Layer of transparent electrode layer is covered on the first substrate；
A part for transparent electrode layer is etched away, the first transparency electrode with optical grating construction is formed, can be specifically bar
Shape electrode or block type electrode.
Step 302：One layer of first mixture is coated in first transparency electrode, as shown in Figure 8 a, the first mixture 31 wraps
Include reactive monomer 31a, light trigger 31b, positivity liquid crystal 102d and copolymer 1 02c.
Further, this method can also include making the first mixture, specifically include：
Reactive monomer, light trigger and positivity liquid crystal are well mixed and obtain the second mixture, reactive monomer, light draw
The quality of hair agent and positivity liquid crystal accounts for 20-60%, 3-5% and 35-77% of the second mixture quality respectively；By the second mixture
It is well mixed with copolymer 3/7-2/8 in mass ratio, obtains the first mixture.Proportioning according to above-mentioned each material is made first
Mixture, the formation of macromolecule network is can guarantee that with the arrangement of grappling positivity liquid crystal, while ensure that macromolecule network passes through copolymerization
Thing is bonded on substrate.
In specific implementation, the ratio of each material can be chosen according to being actually needed, such as reactive monomer, light-initiated
The ratio of agent and positivity liquid crystal can be 55%/5%/40% or 45%/5%/50% etc..Second mixture is pressed with copolymer
Mass ratio is 7/3 or 4/6 etc..
Wherein, reactive monomer can be epoxy monomer, and light trigger can be cation light initiator.Using ring
Oxygen tree alicyclic monomer and cation light initiator carry out polymerisation generation macromolecule network, save and react when institute in general polymerization
The chiral additives needed.
Further, epoxy monomer can be glycol glycidyl ethers (EGDE), bisphenol F diglycidyl ether
(DGEBF), trihydroxymethylpropanyltri diglycidyl ether (TMPTGE) and one kind in pentaerythrite glycidol ether (PTTGE) or
Several mixtures (such as EGDE and DGEBF mixture).Cation light initiator can be UVI-6974 type cationic photopolymerizations
Initiator.
Wherein, copolymer can be vinyl-vinyl acetate copolymer.Vinyl-vinyl acetate copolymer viscosity is larger,
It can be very good polymer network layer being bonded in the first transparency electrode；Vinyl-vinyl acetate copolymer molecular weight compared with
It is high and in netted, macromolecule network can be enwinded.
In addition in embodiments of the present invention, the thickness of polymer network layer can be 2-20 microns.The high score of 2-20 microns
Subnet network layers had both ensured the performance of liquid crystal grating, ensured that the thickness of liquid crystal grating is unlikely excessive again.
Step 303：More than first substrate to the clearing point temperature of positivity liquid crystal of the heating coated with the first mixture (such as
50 °), make positivity liquid crystal disorderly arranged, as shown in Figure 8 b.
Step 304：Using the mixture of ultraviolet light first, make reactive monomer and light trigger generation ionic polymerization anti-
Macromolecule network should be formed, with the arrangement of grappling positivity liquid crystal, obtains polymer network layer, the structure of macromolecule network is referring to figure
3, repeat no more here.
Specifically, can be included using the mixture of ultraviolet light first：
The use of intensity of illumination is 3-25mW/cm2Ultraviolet light the first mixture 20-40min, thereby may be ensured that light
It is abundant according to rear ionic polymerization, with more preferable grappling liquid crystal.Wherein, intensity of illumination and light application time can be according to being actually needed
Preferred value, such as 5mW/cm are selected from above range2、30min.After the completion of irradiation, the temperature of the first mixture is down to room
Temperature, subsequent step is then carried out again.
Step 305：Second substrate is covered on polymer network layer to form liquid crystal grating, second substrate is towards macromolecule
The one side of Internet has the second transparency electrode being correspondingly arranged with first transparency electrode.
Fig. 9 provides the flow chart of another liquid crystal grating preparation method, this method using negative liquid crystal as raw material,
And specifically illustrate and how one layer of polymer network layer is covered in first transparency electrode, referring to Fig. 9, this method includes：
Step 401：The first transparency electrode with optical grating construction is made on the first substrate of the light emission side of display panel.
Wherein, the first transparency electrode with optical grating construction can be made by following manner：
Layer of transparent electrode layer is covered on the first substrate；
A part for transparent electrode layer is etched away, the first transparency electrode with optical grating construction is formed, can be specifically bar
Shape electrode or block type electrode.
Step 402：One layer of vertical-tropism agent is coated in first transparency electrode.
Step 403：One layer of the 3rd mixture is coated in the first transparency electrode coated with vertical-tropism agent, such as Fig. 9 a institutes
Show, the 3rd mixture 41 includes reactive monomer 41a, light trigger 41b, negative liquid crystal 102e and copolymer 1 02c.
Further, this method can also include making the 3rd mixture, specifically include：
Reactive monomer, light trigger and negative liquid crystal are well mixed and obtain the 4th mixture, reactive monomer, light draw
The quality of hair agent and negative liquid crystal accounts for 20-60%, 3-5% and 35-77% of the 4th mixture quality respectively；By the 4th mixture
It is well mixed with copolymer 3/7-2/8 in mass ratio, obtains the 3rd mixture.Proportioning according to above-mentioned each material is made the 3rd
Mixture, the formation of macromolecule network is can guarantee that with the arrangement of grappling negative liquid crystal, while ensure that macromolecule network passes through copolymerization
Thing is bonded on substrate.
In specific implementation, the ratio of each material can be chosen according to being actually needed, such as reactive monomer, light-initiated
The ratio of agent and negative liquid crystal can be 35%/5%/60%.Second mixture is 7/3 in mass ratio with copolymer.
Wherein, reactive monomer can be epoxy monomer, and light trigger can be cation light initiator.Using ring
Oxygen tree alicyclic monomer and cation light initiator carry out polymerisation generation macromolecule network, save and react when institute in general polymerization
The chiral additives needed.
Further, epoxy monomer can be glycol glycidyl ethers (EGDE), bisphenol F diglycidyl ether
(DGEBF), trihydroxymethylpropanyltri diglycidyl ether (TMPTGE) and one kind in pentaerythrite glycidol ether (PTTGE) or
Several mixtures.Cation light initiator can be UVI-6974 type cation light initiators.
Wherein, copolymer can be vinyl-vinyl acetate copolymer.Vinyl-vinyl acetate copolymer viscosity is larger,
It can be very good polymer network layer being bonded in the first transparency electrode；Vinyl-vinyl acetate copolymer molecular weight compared with
It is high and in netted, macromolecule network can be enwinded.
In addition in embodiments of the present invention, the thickness of polymer network layer can be 2-20 microns.The high score of 2-20 microns
Subnet network layers had both ensured the performance of liquid crystal grating, ensured that the thickness of liquid crystal grating is unlikely excessive again.
Step 404：Using the mixture of ultraviolet light the 3rd, make reactive monomer and light trigger generation ionic polymerization anti-
Macromolecule network should be formed, with the arrangement of grappling negative liquid crystal, obtains polymer network layer, the structure of macromolecule network is referring to figure
5, repeat no more here.
Specifically, can be included using the mixture of ultraviolet light first：
The use of intensity of illumination is 3-25mW/cm2The mixture 20-40min of ultraviolet light the 3rd, thereby may be ensured that light
It is abundant according to rear ionic polymerization, with more preferable grappling liquid crystal.Wherein, intensity of illumination and light application time can be according to being actually needed
Preferred value, such as 5mW/cm are selected from above range2、30min.After the completion of irradiation, the temperature of the 3rd mixture is down to room
Temperature, subsequent step is then carried out again.
Step 405：Second substrate is covered on polymer network layer to form liquid crystal grating, second substrate is towards macromolecule
The one side of Internet has the second transparency electrode being correspondingly arranged with first transparency electrode.
Figure 10 provides a kind of structural representation of display device, and referring to Figure 10, the display device includes：Display panel
501st, liquid crystal grating 502, the first polaroid 503 and the second polaroid 504 being arranged on display panel 501, display panel 501
And liquid crystal grating 502 is folded between the first polaroid 503 and the second polaroid 504, liquid crystal grating is carried by earlier figures 1- Fig. 6
The liquid crystal grating of confession.
Wherein, display panel 501 can be that liquid crystal display panel, organic EL display panel, plasma are shown
The display device such as panel or CRT display panel.
Certain display device also includes the structures such as housing of conventional display device.
The embodiment of the present invention on the first substrate of the light emission side of display panel by covering a polymer network layer, at this
In polymer network layer, macromolecule network makes the liquid crystal be arranged by preset direction by grappling effect, to ensure when being powered
The sequence of liquid crystal in liquid crystal grating can be changed, realize 3D display and 2D show between conversion, and on the one hand copolymer is used
In winding above-mentioned macromolecule network, on the other hand macromolecule network is adhered directly to the first substrate of the light emission side of display panel
On, the making of liquid crystal grating is carried out without one piece of substrate is provided separately, so saving one piece of base compared with prior art
Plate, thus the thickness of liquid crystal grating is reduced, the problem of transmitance loss is higher when 2D is shown is avoided, enhances display effect
Fruit.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (19)
1. a kind of liquid crystal grating, it is characterised in that the liquid crystal grating includes：
Form the first transparency electrode with optical grating construction on the first substrate of the light emission side of display panel, be covered in described in
Polymer network layer in first transparency electrode and the second substrate being covered on the polymer network layer, second base
The one side of plate towards the polymer network layer has the second transparency electrode being correspondingly arranged with the first transparency electrode；
The polymer network layer includes liquid crystal, the high score subnet for making the liquid crystal be arranged by preset direction by grappling effect
Network and for snarling the macromolecule network and the macromolecule network being bonded at into the copolymerization in the first transparency electrode
Thing.
2. liquid crystal grating according to claim 1, it is characterised in that the macromolecule network is that reactive monomer draws with light
The macromolecule network that hair agent is formed by polymerization.
3. liquid crystal grating according to claim 2, it is characterised in that the reactive monomer is epoxy monomer, institute
It is cation light initiator to state light trigger.
4. liquid crystal grating according to claim 3, it is characterised in that the epoxy monomer is ethylene glycol glycidol
Ether, bisphenol F diglycidyl ether, trihydroxymethylpropanyltri diglycidyl ether and one kind or several in pentaerythrite glycidol ether
The mixture of kind.
5. liquid crystal grating according to claim 1, it is characterised in that the copolymer is ethylene-vinyl acetate c
Thing.
6. liquid crystal grating according to claim 1, it is characterised in that when the liquid crystal is positivity liquid crystal, the high score
Sub-network makes the positivity liquid crystal disorderly arranged by grappling effect；
When the liquid crystal is negative liquid crystal, the macromolecule network is arranged vertically the negative liquid crystal by grappling effect.
7. liquid crystal grating according to claim 1, it is characterised in that the thickness of the polymer network layer is that 2-20 is micro-
Rice.
8. a kind of liquid crystal grating preparation method, it is characterised in that methods described includes：
The first transparency electrode with optical grating construction is made on the first substrate of the light emission side of display panel；
One layer of polymer network layer is covered in the first transparency electrode, the polymer network layer includes liquid crystal, passes through anchor
Be set for make the liquid crystal as the macromolecule network that preset direction arrange and for snarl the macromolecule network and general described in
Macromolecule network is bonded at the copolymer in the first transparency electrode；
Second substrate is covered on the polymer network layer to form liquid crystal grating, the second substrate is towards the macromolecule
The one side of Internet has the second transparency electrode being correspondingly arranged with the first transparency electrode.
9. according to the method for claim 8, it is characterised in that described that a floor height point is covered in the first transparency electrode
Subnet network layers, including：
One layer of first mixture is coated in the first transparency electrode, first mixture includes reactive monomer, light draws
Send out agent, positivity liquid crystal and copolymer；
Heating coated with first mixture first substrate to the clearing point temperature of the positivity liquid crystal more than, make it is described just
Property liquid crystal is disorderly arranged；
Using the first mixture described in ultraviolet light, make reactive monomer that ionic polymerization occur with light trigger and form height
Molecular network, with the arrangement of positivity liquid crystal described in grappling, obtain the polymer network layer.
10. according to the method for claim 9, it is characterised in that described using the first mixture described in ultraviolet light, bag
Include：
The use of intensity of illumination is 3-25mW/cm2Ultraviolet light described in the first mixture 20-40min.
11. according to the method for claim 9, methods described also includes：
Reactive monomer, light trigger and positivity liquid crystal are well mixed and obtain the second mixture, reactive monomer, light trigger
Account for 20-60%, 3-5% and 35-77% of second mixture quality respectively with the quality of positivity liquid crystal；
Second mixture is well mixed with copolymer 3/7-2/8 in mass ratio, obtains first mixture.
12. according to the method for claim 8, it is characterised in that described that a floor height is covered in the first transparency electrode
Molecular network network layers, including：
One layer of vertical-tropism agent is coated in the first transparency electrode；
One layer of the 3rd mixture, the 3rd mixture bag are coated in the first transparency electrode coated with vertical-tropism agent
Include reactive monomer, light trigger, negative liquid crystal and copolymer；
Using the 3rd mixture described in ultraviolet light, make reactive monomer that ionic polymerization occur with light trigger and form height
Molecular network, with the arrangement of negative liquid crystal described in grappling, obtain the polymer network layer.
13. according to the method for claim 12, it is characterised in that it is described to use the 3rd mixture described in ultraviolet light,
Including：
The use of intensity of illumination is 3-25mW/cm2Ultraviolet light described in the 3rd mixture 20-40min.
14. according to the method for claim 12, it is characterised in that methods described also includes：
Reactive monomer, light trigger and negative liquid crystal are well mixed and obtain the 4th mixture, reactive monomer, light trigger
Account for 20-60%, 3-5% and 35-77% of the 4th mixture quality respectively with the quality of negative liquid crystal；
4th mixture is well mixed with copolymer 3/7-2/8 in mass ratio, obtains the 3rd mixture.
15. according to the method described in claim any one of 9-14, it is characterised in that the reactive monomer is epoxy resin list
Body, the light trigger are cation light initiator.
16. according to the method for claim 15, it is characterised in that the epoxy monomer is ethylene glycol glycidol
Ether, bisphenol F diglycidyl ether, trihydroxymethylpropanyltri diglycidyl ether and one kind or several in pentaerythrite glycidol ether
The mixture of kind.
17. according to the method described in claim any one of 8-14, it is characterised in that the copolymer is ethane-acetic acid ethyenyl
Ester copolymer.
18. according to the method described in claim any one of 8-14, it is characterised in that the thickness of the polymer network layer is 2-
20 microns.
19. a kind of display device, the display device includes：Display panel, the liquid crystal grating being arranged on the display panel,
First polaroid and the second polaroid, the display panel and the liquid crystal grating are folded in first polaroid and second inclined
Between mating plate, it is characterised in that the liquid crystal grating is the liquid crystal grating described in any one of claim 1 to 7.
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| WO2016020630A2 (en) | 2014-08-08 | 2016-02-11 | Milan Momcilo Popovich | Waveguide laser illuminator incorporating a despeckler |
| WO2016042283A1 (en) | 2014-09-19 | 2016-03-24 | Milan Momcilo Popovich | Method and apparatus for generating input images for holographic waveguide displays |
| CN107873086B (en) | 2015-01-12 | 2020-03-20 | 迪吉伦斯公司 | Environmentally isolated waveguide display |
| CN108474945B (en) | 2015-10-05 | 2021-10-01 | 迪吉伦斯公司 | Waveguide display |
| CN105572892B (en) * | 2016-03-10 | 2019-01-22 | 京东方科技集团股份有限公司 | It is divided material and preparation method thereof, grating and its application method and display device |
| EP3924759A4 (en) | 2019-02-15 | 2022-12-28 | Digilens Inc. | Methods and apparatuses for providing a holographic waveguide display using integrated gratings |
| US11307463B2 (en) * | 2019-03-29 | 2022-04-19 | Sharp Kabushiki Kaisha | Liquid crystal display panel and method for manufacturing the same |
| EP4022370A4 (en) * | 2019-08-29 | 2023-08-30 | Digilens Inc. | Evacuating bragg gratings and methods of manufacturing |
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